- 䳿 exec(), .
exec , , .
. execve.
3 ѳ exec
l - list
e - environ
v -
p - PATH
#include <unistd.h>
int execl (path, arg0, arg1,..., argn, (char*)0)
char *path, *arg0, *arg1,..., *argn;
int execv (path, argv)
char *path, *argv[];
int execle (path, arg0, arg1,..., argn, (char*)0, envp)
char *path, *arg0, *arg1,..., *argn, *envp[];
int execve (path, argv, envp)
char *path, *argv[], *envp[];
int execlp (file, arg0, arg1,..., argn, (char*)0)
char *file, *arg0, *arg1,..., *argn;
int execvp (file, argv)
char *file, *argv[];
Apye path aa ' a, o opa poec.
Apye file ae aae ' a, o opa poec. Ec apye file e co /, pec e a oc caoo e aax ae epeeo PATH.
Apye arg0, arg1,..., argn a coo, coo NUL. coo cco apye, epea ooy opay poec. Apye arg0 a , c path, path.
Apye argv aco a co , coo NUL. coo cco apye, epea ooy opay poec. Apye argv[0] a , c path, path.
Apye envp ec aco a co , coo NUL. coo oa cpe ooo opa poec. ee ac y .
B aepe e ypa ae cap opa poec. ypa cap opa, ae -1 errno aocc o .
:
− a e ,
− pec e a e aaoo.
− e a aao pec e a,
− a e ,
− ,
− a , opa e c opao oᒺoo a,
− o a co poeypo (pa ceeo cpy), a ac py ,
− ' .
− co a cc apye pe cce 512 a.
− ooo a e aoo,
− pec aa path, argv envp xo a apecoo poc poec.
